OBISAKIN, L. O. (2014). Protocol for life: Guidelines on diplomatic, official and social manners. Somerest Ventures.
Lua i Stíl Chicago (17ú heag.)OBISAKIN, Lawrence Olufemi. Protocol for Life: Guidelines on Diplomatic, Official and Social Manners. Somerest Ventures, 2014.
Lua MLA (9ú heag.)OBISAKIN, Lawrence Olufemi. Protocol for Life: Guidelines on Diplomatic, Official and Social Manners. Somerest Ventures, 2014.
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